If you do the same you will likely nullify the use of the consolidated airfields mod because the global layer would be replaced.

I plan to modify the global layer csv files from Consolidated airfields mod and do not alter these new, already modded airfields (if you do not mind, of course). Mission Editor will just replace the static, parked planes on these airfields dynamically (before each mission start) according to historical data.It will have just one limitation - this feature will be available only to users with Consolidated airfileds mod installed and enabled.

I don't see a problem with you using those global_layer files as a template. Please PM me so we can dialogue on your implementation strategy. As you can appreciate, I am only concerned about maintaining the integrity of the Consolidated Airfields mod. If your approach doesn't require any changes to the existing Consolidated Airfields Mod then there are no concerns to be addresseed.